SHI Youzhi,LIN Lianquan,CHE Ailan,et al.Quantitative evaluation of construction risk of expansive soil tunnel under existing subway station[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(02):131-139.
SHI Youzhi,LIN Lianquan,CHE Ailan,et al.Quantitative evaluation of construction risk of expansive soil tunnel under existing subway station[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(02):131-139. DOI: 10.13471/j.cnki.acta.snus.2020B018.
Quantitative evaluation of construction risk of expansive soil tunnel under existing subway station
Taking the tunnel under the station of Hefei Metro Line 5 as object, considering the characteristics of expansive soil, such as dilatancy
crevice and et al, and the construction scheme on site,a risk assessment model based on “overlaying metro station deformation and failure” as the top event is builded.The probability of incident and the importance of influencing factors are determined. Then
the risk of damage to the overlaying metro station is evaluated and risk lever is rated by the fuzzy AHP method. The results show that this paper provides a complete quantitative evaluation system for the construction risk assessment of underpass of an existing subway station.